libsodium-tweetnacl-wrappers

crypto_hash function

• nacl.lowlevel.crypto_hash

const nacl = require("./dist/modules-sumo/libsodium-tweetnacl-wrappers")
x = Uint8Array.from("uE8PKeSYFIorw8ojOk4Cg7et0s4WSxf5WpjOORascdLW2wQuYvGoLDR7zM9USNh5")
nacl.lowlevel.crypto_hash(x)

• should return 0 and change the value of x to the new encrypted value

box.before function

• Returns a precomputed shared key which can be used in nacl.box.after and nacl.box.open.after

const nacl = require("./dist/modules-sumo/libsodium-tweetnacl-wrappers")
x = Uint8Array.from("T6Mjk3c65EI2C09F6jlr1fibgaqgC1eT")
y = Uint8Array.from("T6Mjk3c65EI2C09F6jlr1fibgaqgC1eT")
nacl.box.before(x, y)

• should return a new array with 32U length

box.keyPair

• Generates a new random key pair for box and returns it as an object with publicKey and secretKey members

const nacl = require("./dist/modules-sumo/libsodium-tweetnacl-wrappers")
nacl.box.keyPair()

• should return a new array with publicKey and secretKey each with 32U length

box.keyPair.fromSecretKey

• Returns a key pair for box with public key corresponding to the given secret key.

const nacl = require("./dist/modules-sumo/libsodium-tweetnacl-wrappers")
secret = (nacl.box.keyPair()).secretKey
nacl.box.keyPair.fromSecretKey(secret)

• should return a new array with publicKey and secretKey each with 32U length

sign.keyPair

• Generates new random key pair for signing and returns it as an object with publicKey and secretKey members

const nacl = require("./dist/modules-sumo/libsodium-tweetnacl-wrappers")
nacl.sign.keyPair()

• should return a new array with publicKey 32U length and secretKey 64U length

sign.detached function

• nacl.sign.detached

const nacl = require("./dist/modules-sumo/libsodium-tweetnacl-wrappers")
message = Uint8Array.from("T6Mjk3c65EI2C09F6jlr1fibgaqgC1eT")
key = Uint8Array.from("T6Mjk3c65EI2C09F6jlr1fibgaqgC1eTT6Mjk3c65EI2C09F6jlr1fibgaqgC1eT")
nacl.sign.detached(message, key)

• should return the new encrypted value with 32U length (in tweetnacl the length is 64 but in this case it's ok as at verification is also in sodium)

sign.detached.verify function

• nacl.sign.detached.verify

const nacl = require("./dist/modules-sumo/libsodium-tweetnacl-wrappers")
message = Uint8Array.from("T6Mjk3c65EI2C09F6jlr1fibgaqgC1eT")
key = Uint8Array.from("T6Mjk3c65EI2C09F6jlr1fibgaqgC1eTT6Mjk3c65EI2C09F6jlr1fibgaqgC1eT")
token = nacl.sign.detached(message, key)
nacl.sign.detached.verify(message, token,  key)

• should return true, as the message is verified with the right token

sign.keyPair.fromSeed function

• nacl.sign.keyPair.fromSeed

const nacl = require("./dist/modules-sumo/libsodium-tweetnacl-wrappers")
seed = Uint8Array.from("T6Mjk3c65EI2C09F6jlr1fibgaqgC1eT")
nacl.sign.keyPair.fromSeed(seed)

• should return a new array with publicKey 32U length and secretKey 64U length

notes

• testing will not working unless npm i passes (best to test in a unix, mac os is problematic) see node-sodium installation for instructions
• all returned values should be of type Uint8Array
• all sodium functions receive a buffer, the workaround is to convert the buffers to Uint8Array pass it to sodium and change the original arrays by reference copy